# Chessmirror – Chess Trainer — Turn your blunders into drills

> Turn your blunders into drills (iPhone/iPad app by 凤民 孙.)

- Source: https://appshunter.io/ios/app/chessmirror-chess-trainer/id6820324541 (this page in markdown: same URL + `.md`)
- Developer: [凤民 孙](https://appshunter.io/developer/1564679242)
- Category: Games, Education, Board, Strategy
- Price: Free
- Age rating: 4+
- Requires: iOS 26.0 · 116 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, European Portuguese, Chinese (Simplified, China), European Spanish
- Released: 2026-10-18
- Data updated: 2026-11-03

## What is Chessmirror?

Chessmirror turns the moves you got wrong into the positions you practise, so the same mistake does not stand in your next game.

PHOTOGRAPH A BOARD
Point the camera at a real board, a book diagram or a screenshot. Chessmirror reads the position on the device, lets you correct any piece, the side to move and castling rights, and opens it as a game.

PLAY WITH NO SLIPS
Play against Stockfish 18, built into the app, at a strength you choose. With No Slips on, a move that gives away too much is handed back to you before it is played — and written down, so you meet that position again.

A MISTAKE BOOK THAT WRITES ITSELF
Every costly move becomes an entry: one position, however many games it turned up in, with what you played and what it cost in winning chances. Import your games from lichess or Chess.com by username, or paste a PGN or FEN, and have every move scored locally.

A DAILY THAT KNOWS WHAT IS DUE
Practice is scheduled by spaced repetition (FSRS). Each day's queue holds the positions that are due and a few new ones. Play the move, get a plain verdict — passed or not — and play on if you want to.

FOUND FOR YOU
Mates and tactics the engine found in your own games are collected into sets. Tap the heart on any position to keep it in your favourites.

PRIVATE BY DESIGN
• Recognition and analysis run on your device. No account, no ads, no tracking.
• Games are plain PGN files in your own iCloud Drive, visible in the Files app.
• The network is used only when you ask to import games from a chess site.

Also: a face-to-face mode for over-the-board play on one phone, an advantage bar, dark mode, iPad layouts, and eight languages — English, Simplified Chinese, Japanese, Korean, French, German, Spanish and Portuguese.

Chessmirror is free software under the GPLv3. Source code: https://github.com/sunfmin/chessmirror

## Is Chessmirror safe?

Not enough ratings yet to assess Chessmirror.

## Is Chessmirror legit?

Chessmirror – Chess Trainer has limited verification signals. The AppsHunter Legitimacy Score for Chessmirror is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-19

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-03.*